Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia) / Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76, Vol. XVIII

by Ernst Haeckel

Definition.—Surface of the shell smooth or rough, without radial spines.

1. Spongellipsis lævis, n. sp.

Shell ellipsoidal, with smooth surface, its spongy wall scarcely one-tenth as thick as the minor axis of the inner cavity. Spongy framework very compact, with small meshes, three to six times as broad as the bars. Proportion of the major axis to the minor = 3 : 2.

Dimensions.—Major axis (or length) of the shell 0.36, minor axis (or breadth) 0.24.

Habitat.—Pacific, central area, Station 265, surface.

2. Spongellipsis aspera, n. sp.

Shell ellipsoidal, with rough surface, its spongy wall nearly half as thick as the minor axis of the inner cavity. Spongy framework very loose, with large meshes, ten to twenty times as broad as the bars. Proportion of the major axis to the minor = 4 : 3.

Dimensions.—Length of the shell 0.24, breadth 0.18.

Habitat.—North Pacific, Station 253, surface.

3. Spongellipsis aplysina, n. sp.